Self - diagnosis function and Checking points
Error Indication
Operation
(GREEN)
Timer
(ORANGE)
Error
(Protection)
Diagnosis Method
The discharge temperature error is activated.
> Permanent stop.
07-06
Excessive high pressure
protection on cooling
Discharge temperature
error
[Diagnosis Point]
Check if 2-way valve or 3-way valve is left open.
Heat radiation is blocked (Inlet /outlet).
Check if outdoor fan is defective (does not rotate).
Refrigeration cycle defective (Refer to after mentioned "refrigerant cycle disagnosis").
Excessive high pressure protection on cooling mode has been activated.
> Compressor, outdoor fan : Off (It releases after 3 minute ST).
[Diagnosis Point]
[Diagnosis Point]
[Diagnosis Point]
Heat radiation is blocked (Inlet /outlet).
Check if outdoor fan is defective (does not rotate).
Refrigeration cycle defective (Refer to after mentioned "refrigerant cycle disagnosis").
Excessive voltage of DC voltage on PFC circuit in inverter PCB is detected, or the excessive current in the circuit is detected.
> Permanent stop.
[Diagnosis Point]
Controller PCB defective (Refer to after mentioned "PFC circuit diagnosis")
PFC circuit error
0.5 sec
2 times
0.5 sec
3 times
0.5 sec
4 times
0.5 sec
7 times
0.5 sec
2 times
0.5 sec
3 times
0.5 sec
8 times
Output voltage error of Active filter is detected.
> Permanent stop.
Check the wiring connection (Connector is loose/open, Choke coil)
Controller PCB defective (Refer to after mentioned “Active Filter diagnosis”)
Active Filter Error
Active filter error or instantaneous cut off error is detected.
> Compressor, Outdoor Fan : OFF
Check the wiring connection (Connector is loose/open, Choke coil)
Controller PCB defective (Refer to after mentioned “Active Filter diagnosis”)
<CAUTION> Even if the unit is normal, it may detect error depending on the power supply voltage condition.
Active Filter Error
(Permanent Stop)
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